Denaturant Denatonium Benzoate Solution in Mono Ethylene Glycol is a bitter solution. Denaturant Denatonium Benzoate Solution in Mono Ethylene Glycol is manufactured by C Tech Corporation which is ISO 9001:2000 and ISO 14001:1996 accredited. C Tech Corporation also manufactures various types of chemicals. The Mono Ethylene Glycol to which this Denatonium Benzoate to make a solution is very poisonous antifreeze. Adding Denatonium Benzoate Solution to such Mono Ethylene Glycol based antifreeze makes it very difficult for pets to swallow this bitter solution. This solution can be custom made and can be designed according to customer specifications.